18227133 has 8 divisors (see below), whose sum is σ = 27003200. Its totient is φ = 12151404.

The previous prime is 18227123. The next prime is 18227147. The reversal of 18227133 is 33172281.

It is not a de Polignac number, because 18227133 - 2¹⁴ = 18210749 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 675079 = 18227133 / (1 + 8 + 2 + 2 + 7 + 1 + 3 + 3).

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18227097 and 18227106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18227123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337513 + ... + 337566.

It is an arithmetic number, because the mean of its divisors is an integer number (3375400).

Almost surely, 2^18227133 is an apocalyptic number.

It is an amenable number.

18227133 is a deficient number, since it is larger than the sum of its proper divisors (8776067).

18227133 is an equidigital number, since it uses as much as digits as its factorization.

18227133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675088 (or 675082 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 18227133 is about 4269.3246538533. The cubic root of 18227133 is about 263.1718625898.

The spelling of 18227133 in words is "eighteen million, two hundred twenty-seven thousand, one hundred thirty-three".